import 'package:sysfarma_mobile/src/core/theme/app_tokens.dart';
import 'package:flutter/material.dart';
import 'package:google_fonts/google_fonts.dart';

class AppTheme {
  const AppTheme._();

  static ThemeData light() {
    final colorScheme = ColorScheme.fromSeed(
      seedColor: AppTokens.primary,
      brightness: Brightness.light,
    ).copyWith(
      primary: AppTokens.primary,
      onPrimary: Colors.white,
      secondary: AppTokens.secondary,
      onSecondary: Colors.white,
      error: AppTokens.danger,
      onError: Colors.white,
      surface: AppTokens.surface,
      onSurface: AppTokens.textPrimary,
      surfaceTint: AppTokens.primary,
    );

    final base = ThemeData(
      useMaterial3: true,
      colorScheme: colorScheme,
      scaffoldBackgroundColor: AppTokens.background,
      cardColor: AppTokens.surface,
      canvasColor: AppTokens.surface,
    );

    final roboto = GoogleFonts.robotoTextTheme(base.textTheme);
    final textTheme = roboto.copyWith(
      headlineSmall: GoogleFonts.rubik(
        textStyle: roboto.headlineSmall,
        fontWeight: FontWeight.w700,
        color: AppTokens.textPrimary,
      ),
      titleLarge: GoogleFonts.rubik(
        textStyle: roboto.titleLarge,
        fontWeight: FontWeight.w700,
        color: AppTokens.textPrimary,
      ),
      titleMedium: GoogleFonts.rubik(
        textStyle: roboto.titleMedium,
        fontWeight: FontWeight.w600,
        color: AppTokens.textPrimary,
      ),
      headlineMedium: GoogleFonts.rubik(
        textStyle: roboto.headlineMedium,
        fontWeight: FontWeight.w700,
        color: AppTokens.textPrimary,
      ),
      bodyLarge: roboto.bodyLarge?.copyWith(color: AppTokens.textPrimary, height: 1.5),
      bodyMedium: roboto.bodyMedium?.copyWith(color: AppTokens.textPrimary, height: 1.5),
      labelLarge: roboto.labelLarge?.copyWith(fontWeight: FontWeight.w600),
    );

    return base.copyWith(
      textTheme: textTheme,
      appBarTheme: AppBarTheme(
        elevation: 0,
        backgroundColor: Colors.transparent,
        surfaceTintColor: Colors.transparent,
        foregroundColor: AppTokens.textPrimary,
        titleTextStyle: textTheme.titleLarge,
      ),
      cardTheme: CardThemeData(
        elevation: 0,
        color: AppTokens.surface,
        surfaceTintColor: AppTokens.surface,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(AppTokens.radiusMedium),
          side: const BorderSide(color: AppTokens.border),
        ),
      ),
      inputDecorationTheme: InputDecorationTheme(
        filled: true,
        fillColor: Colors.white,
        labelStyle: textTheme.bodyMedium?.copyWith(color: AppTokens.textSecondary),
        hintStyle: textTheme.bodyMedium?.copyWith(color: AppTokens.textSecondary.withValues(alpha: 0.80)),
        border: OutlineInputBorder(
          borderRadius: BorderRadius.circular(AppTokens.radiusSmall),
          borderSide: const BorderSide(color: AppTokens.border),
        ),
        enabledBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(AppTokens.radiusSmall),
          borderSide: const BorderSide(color: AppTokens.border),
        ),
        focusedBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(AppTokens.radiusSmall),
          borderSide: const BorderSide(color: AppTokens.primary, width: 1.3),
        ),
        errorBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(AppTokens.radiusSmall),
          borderSide: const BorderSide(color: AppTokens.danger, width: 1.3),
        ),
        focusedErrorBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(AppTokens.radiusSmall),
          borderSide: const BorderSide(color: AppTokens.danger, width: 1.3),
        ),
        errorStyle: textTheme.bodySmall?.copyWith(color: AppTokens.danger),
        contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 16),
      ),
      floatingActionButtonTheme: const FloatingActionButtonThemeData(
        backgroundColor: AppTokens.cta,
        foregroundColor: Colors.white,
      ),
      bottomSheetTheme: const BottomSheetThemeData(
        backgroundColor: AppTokens.surface,
        surfaceTintColor: AppTokens.surface,
        showDragHandle: true,
      ),
      dividerTheme: DividerThemeData(
        color: AppTokens.border.withValues(alpha: 0.72),
        thickness: 1,
        space: 24,
      ),
      listTileTheme: const ListTileThemeData(
        contentPadding: EdgeInsets.zero,
        iconColor: AppTokens.primary,
      ),
      navigationBarTheme: NavigationBarThemeData(
        backgroundColor: Colors.white,
        indicatorColor: AppTokens.primary.withValues(alpha: 0.12),
        labelTextStyle: WidgetStateProperty.resolveWith(
          (states) => textTheme.labelMedium?.copyWith(
            color: states.contains(WidgetState.selected) ? AppTokens.primary : AppTokens.textSecondary,
            fontWeight: states.contains(WidgetState.selected) ? FontWeight.w700 : FontWeight.w600,
          ),
        ),
      ),
      chipTheme: ChipThemeData(
        backgroundColor: Colors.white,
        disabledColor: AppTokens.border,
        selectedColor: AppTokens.primary.withValues(alpha: 0.12),
        secondarySelectedColor: AppTokens.primary.withValues(alpha: 0.12),
        padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
        labelStyle: textTheme.labelMedium?.copyWith(color: AppTokens.textPrimary),
        secondaryLabelStyle: textTheme.labelMedium?.copyWith(color: AppTokens.primary),
        side: const BorderSide(color: AppTokens.border),
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(999),
        ),
      ),
      snackBarTheme: SnackBarThemeData(
        behavior: SnackBarBehavior.floating,
        backgroundColor: AppTokens.textPrimary,
        contentTextStyle: textTheme.bodyMedium?.copyWith(color: Colors.white),
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(AppTokens.radiusSmall),
        ),
      ),
      filledButtonTheme: FilledButtonThemeData(
        style: FilledButton.styleFrom(
          minimumSize: const Size(88, 52),
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(AppTokens.radiusSmall),
          ),
        ),
      ),
      outlinedButtonTheme: OutlinedButtonThemeData(
        style: OutlinedButton.styleFrom(
          minimumSize: const Size(88, 48),
          foregroundColor: AppTokens.primary,
          side: const BorderSide(color: AppTokens.border),
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(AppTokens.radiusSmall),
          ),
        ),
      ),
    );
  }
}